Sectional kiln.



R. H. McELROY.

SECTIONAL KILN.

APPLICATION FILED JULY 2.19m,

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R. H. McELROY.

SECTIONAL KILN.

APPLICATION FILED JULY 2.19:1.

Patented Apr. 30, 1918.

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R. H. McELROY.

SECTIONAL KILN.

APPLICATION FILED JULY 2. i911.

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' B. H. McELROY.

SECTIONAL KILN.

APPLICATION nun JULY 2. um.

Patented Apr. 80, 1918.

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snc'rronlit KILN.

To all whom it may concern:

Be it known that I, ROY-1'1. MoELnoY, citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new improvements in sectional kilns of either the tunnel or compartment type. The object of the invention is to provide a new and im-.

proved form of communicating or fine arrangement. Another object of the invention is to provide an improved arrangement of bag wall behind which the heatis generated. Other objects ofthe invention will particularly pointed out in the claims. Referring to the accompanying drawings which illustrate the kiln and modifications thereof, Figure 1 is a longitudinal vertical sectional view through a tunnel kiln as con structed in accordance with my invention. Fig. 2 is a similar view showing the invention applied to a kiln of the compartment type. Fig. 3 is a section approximately on the line 3-3 of Fig. 2. Fig. 4: is a horizontal plan view of the kiln as constructed in Fig. 1, the lower portion beingasection on the line P -4? of Fig. 3, the upper right hand portion being a section on the line \4L4; of Fig. 3, while the upper left hand portion is a section on the line lf-{l of Fig. 3. Fig. 5 is a detail view showing a modified construction of the water smoking fines. Figs. 6 and 7 are plan views showarrangements of the water smoking fines. Figs. 8 and 9 are detail views showing a modified construe tion 'of'the gas ducts. Fig. 10 is a view showing a modified construction of the water smoking fines. i

It will be understood that the present invention relates particularly to the bag walls and communicating air fiues which may be incorporated in section kilns of anygwellknown type and which may also be con-- structed either in a single or double battery Specification of Letters Patent.

Patented Apr. 350', islet Application filed July 2, 1917; Serial No. 178,281.

form or en bloc. As is well known kilns of this type are provided with a plurality of communicating compartments adapted to receive the ware to be burned. The various compartments are progressively fired, the waste heat from the compartment being fired being conducted to the compartments containing the green ware in front, and receiving air to support combustion from the previously fired and cooling compartments in the rear. The green ware is placed in the kiln in a compartment somewhat in advance of the compartment being fired and the burnt ware is removed from a compartment somewhat in the rear and after theware has cooled. Referring particularly toFigs. 1, 3 and 4, l-l represents longitudinal side walls which support an arched top 2. In a sectional kiln of the tunnel type the arched top 2 is provided with drop arch .3 which, together with the peculiar setting of. the brick, which is well known in the art, divides the tunnel into separate compart' ments or sections. The side walls 11 are provided with doors a which permit access to be had to the various compartments;

Arranged at each side of the compartments and parallel with the walls 1--l are bag walls 5 behind which the heat is incipiently generated. The bag walls 5 opposite the doors at are provided withwickets The bag walls 5 of each compartment are in longitudinal alinement with the bag walls of the other compartments and lie parallel with the direction of fire. The hot gases; ascend from behind the bag walls and are deflected downwardly by the arched top 2 and pass through the ware and into. the next compartment. This communication may be through fines constructed in the brick, in a well-known manner or by fiues constructed in the kiln as follows:

The kiln as shown in the drawings is provided with a perforated door 6 and lying. beneath the same is a plurality of lateral air fiues 7 which communicate with central draft fines 8. The draft flues 8 connect, through lateral draftfiues 34, with a main draft flue, and a suitable draft appliance such as afan or stack (not shown). When the kilnis constructed'in the form of i a single battery the extreme end sectionsthereof arej con nected by a return flue (notshowniinawell-known manner. When thefikiln-is :in' the form of a double battery the'opposite end sections of the two batteries arecon nected by lateral fines (not shown) as is well known in the art. To permit the heated or sulfur gases to pass out of the burnt compartment and into the next compartment to pro-heat the green ware therein the central draft fines-8 are, at each compartment, connected by diagonal fines 9 to side air fines 10 which lie along the inner side of the walls 11 of the next section or compartment. Extending upwardly from the fines 10 are air vfines 11 which enter-the compartments behind the'bag walls. The fines S, 9 and 10,inaddition to conducting the heated or sulfur gases tothe forward or pre heated sections,also conduct heated air from the coolin section in the' rearto the burners of the section being burned. Also discharging into the compartments behind the bag .walls are gasports 12which may be supplied with gas by any well known gas-duct arrangement. The ports 12discharge into the compartments above the air fines 11 and owing to the fact-that the air utilized in supporting combnstion has been previously heated it is of lighterweight than the gas and results in a bettermixture and a more thorough combustion of the fuel. It is to'be understood that both the air used in supporting combustion and theheated air from the burning compartment'passes through the perforated floors 6, fines 7 Sand 10 and air fines 11. In Fig. 2 itis contemplated that the division walls18 will be made permanent thereby forniing a compartment kiln. The construction of the remaining portions of the kilns are, however, identical with those kiln are, however, identical with those above described. The various means for supplying gas to the ports 12 are as follows:

In Figs; 3 and 9 the'gas is supplied to the kiln thronghair ducts 14 which lie beneath the kiln and communicate with the burners 12 by individual ducts 15. This individual communication is controlled by valves 17 which are shown horizontally movable in Fig. 9 and vertically movable in Fig. 3, where a pocket 18 is provided in the side of the'kiln to permit access to be had to the valve. In Fig. 8 the gas ports 12 are shown assnpplied with gas from main gas ducts 19 located at the top of the kiln and communicating with the ports 12 through individual ducts 20 controlled by valves 21.

Kilns constructed in accordance with my invention may 'be provided with any well known typeof water smoking arrangement such as the following: In Fig. 6,. which shows a" double series of compartments constructed en bloc, a centrally disposed water smoking fine 22 is provided which may be mounted either interiorly or vexteriorly to the kiln. WVhen th-e'kiln isconstructed in a double battery arrangement the opposite ends ofthe water smoking fines 22 may be connected by lateral lines (not shown). The water smoking fine 22 is connected to the various compartments by removable hoods 24 which communicate with the fine 22 and the compartments through openings 25 in the top of the kiln. In Fig. 7, which shows a single battery arrangement, the kiln is provided with side water smoking fines 26 which may be either interiorly or exteriorly mounted in reference to the kiln. The water smoking fines 26 communicate with the individual compartments through removable hoods 2 land openings 25 in the top oi the kiln similar to that shown in Fig. (i. In Fig. 5 a construction is shown in which the watersmoking fines cooperate with the gas fines 15. In this construction a water smoking fine 27 is moiuited at the top of the kiln and is connected with the gas fine 15 by down-takes 28 controlled by valves 25). In Fig.'10 the water smoking fine 27 is provided with independent down-takes 33 which enter the compartments through ports 30 and which are provided with valves 31.

Briefly describing the operation of the kiln, the brick or green ware is placed in the kiln in a con'ipartment in front of the compartment being fired and is removed from the kiln from a compartment in the rearv The air used to support combustion enters the kiln through a door of a compartment in the rear and after passing through the cooling compartments, the burning compartment,.the preheating compartments, passes out of the kiln through a stuck or other dra't't appliance. In the operation of the water smoking fines 26, they are connected with a cooling compartment and with a compartment containing green ware through ducts 33. The door of the cooling compartment is broken open to admit air, while the compartment containing the green ware is connected with the draft appliance. The air will pass into the cooling compartment where its temperature will be raised and thenthrongh the ducts 33 and fines 26 into the compartment containing the green ware where it will dry the same. The air then passes out of the kiln.

Having described my invention, 1 claim:

1. A. kiln provided with a plurality of sections in longitudinal alinement, bag-walls at each side of said sections tormin g passage ways forethe heated air and the products of combustion, said kiln being provided with longitudinally disposed communicating fines between the various sections, and lateral collective air lines.

2. A kiln provided with a plurality ot' sections in longitudinal alinement, bagwalls at each side of the various sections forming passage ways for the heated air and the products of combustion, said bagwalls being in longitudinal alinement, and air fines longitudinally disposed and connecting the various sections, and lateral c01 lective flues communicating with said longitudinal flues.

3. A continuous kiln provided with side walls and a plurality of sections in longitudinal alinement, bag-walls at one side of said kiln and parallel with one of said walls and forming passage ways for the heated,

air and the products of combustion, and air flues longitudinally disposed connecting said section, and lateral collective air fiues directly communicating with one of said longitudinal fiues.

i. A kiln provided with a plurality of sections in longitudinal alinement, division walls in said kiln forming a plurality of compartments, bag-walls in said kiln at each side of the compartments and forming passage ways for the heated air and the products of combustion, and parallel with the longitudinal alinement of the compartments, longitudinally disposed air flues connecting said compartments, and lateral collective air flues communicating with said longitudinal air lines.

5. A kiln provided with a plurality of sections in longitudinal alinement, bag-walls in said sections forming passage ways for the heated air and the products of combustion, said kiln being provided with gas and air ports, longitudinally disposed air flu es communicating with said air ports and connecting said sections, a perforated floor'for said kiln, lateral collective air flues below said floor, and communicating flues between said lateral fines and said air ports.

6. A kiln provided with a plurality of sections in longitudinal alinement, said kiln provided with gas and airports, a perforated floor for said kiln, lateral collective air flues beneath said floor, draft fiues connected to said lateral flues, and a series of longitudinally disposed communicating fiues connecting said draft fines and said air ports, said collective air flues and longitudinally disposed communicating flues being adapted to conduct the products of combustion and the air supporting combustion.

7. A kiln provided with a plurality of sections in longitudinal alinement, bag-walls in said sections forming passage ways for the heated air and the products of combustion, said kiln being provided with gas and air ports, a perforated floor for said kiln, lateral collective flues beneath said floor, side air fiues connected to said air ports, and communicating fines between said lateral collective flues and said side air lines. 8. A kiln provided with a plurality of sections in longitudinal alinement, bag-walls in said kiln forming passage ways for the heated air and the products of combustion,

said kiln being provided with gas and air ports, a perforated floor for said kiln, lateral collective fiues below said floor, draft fiues communicating with said lateral collective fiues, side air flues connected to said air ports, and communicating flues connecting said draft fiues' and said side air flues.

9. A kiln provided with a plurality of sections in longitudinal alinement, bag-walls in saidkiln, said kiln being provided with gas and air ports, a perforatedfloor for said kiln, lateral collective flues below said floor, draft flues communicating with said lateral flues, side air flu-es connected to said air ports, and diagonally communicating flues pionnecting said draft flues and said side air ues.

10. A kiln provided with a plurality of sections in longitudinal alinement, bag'walls in said kiln forming passage ways for the heated air and the products of combustion, said kiln being provided with gas and air ports, a perforated floor for said kiln, collective fiues lateral to the longitudinal lines of the kiln beneath said perforated floor, a series of longitudinally disposed communicating flues connecting said lateral flues and said air ports, a gas duct beneath the kiln, and ducts connecting said gas duct with said gas ports.

11. A kiln provided with a plurality of sections in longitudinal alinement, bag-walls in said sections in parallel relation and behind which combustion may take place or preheated air may pass, said kiln being provided with gas and air ports, a series of longitudinally disposed communicating flues between said sections, a water smoking flue for said kiln, and said kiln being provided with ducts which connect said water smoking flue with said sections through said gas ports.

12. A kiln comprising a plurality of sections in longitudinal alinement, bag-walls at each side of said kiln arranged in longitudinal relation and forming passage-ways for the heated air and the products of combustion, and a series of parallel and longitudinally disposed communicating fines between the various sections of the kiln.

13. A kiln comprising a plurality of sections in longitudinal alinement, bag-walls at each side of said sections arranged longitudinally thereof and forming passage-ways for air or the products of combustion, and a series of parallel longitudinally disposed communicating flues between the various sections whereby the air supporting combustion is preheated.

In testimony whereof I affix my signature.

ROY H. McELROY.

fiopies a? this patent may be obtained for five cents each, by addressing the Commissioner of Patenta Washington, D, (3. 

